Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 494 · 40 sums

The method (Grow it every year): Year by year: new amount = amount × (100 + R) ÷ 100. Amount after T years = P × (1 + R/100)ᵀ; compound interest = amount − P. A value falling by R% each year: × (100 − R) ÷ 100 every year. For 2 years, CI − SI = P × R × R ÷ 10000.

1. 1.What is the difference between the compound interest and the simple interest on ₹20000 at 4% per year for 2 years (in ₹)?
2. 2.A scooter is worth ₹2400. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹25600 at 25% per year for 2 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹13600 at 20% per year for 2 years (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹52900 at 10% per year for 2 years (in ₹)?
6. 6.A town has 51200 people. The population grows by 25% every year. What will the population be after 3 years?
7. 7.A scooter is worth ₹19000. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
8. 8.A town has 59200 people. The population grows by 25% every year. What will the population be after 3 years?
9. 9.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹11600 at 5% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹42500 at 10% per year for 1 year, compounded every year (in ₹).
12. 12.Find the compound interest on ₹36200 at 12% per year for 1 year, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?
14. 14.A town has 11900 people. The population grows by 15% every year. What will the population be after 1 year?
15. 15.What is the difference between the compound interest and the simple interest on ₹3600 at 15% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹16800 at 5% per year for 2 years (in ₹)?
17. 17.A town has 16000 people. The population grows by 15% every year. What will the population be after 3 years?
18. 18.What is the difference between the compound interest and the simple interest on ₹34000 at 10% per year for 2 years (in ₹)?
19. 19.What amount will ₹37500 grow to in 3 years at 20% per year compound interest (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹10000 at 25% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹5000 at 8% per year for 2 years, compounded every year (in ₹).
22. 22.What amount will ₹37000 grow to in 3 years at 20% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹21800 at 5% per year for 1 year, compounded every year (in ₹).
24. 24.Find the compound interest on ₹16500 at 4% per year for 1 year, compounded every year (in ₹).
25. 25.Find the compound interest on ₹17500 at 8% per year for 2 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹37600 at 10% per year for 1 year, compounded every year (in ₹).
27. 27.Find the compound interest on ₹56000 at 25% per year for 2 years, compounded every year (in ₹).
28. 28.Find the compound interest on ₹24000 at 5% per year for 1 year, compounded every year (in ₹).
29. 29.Find the compound interest on ₹48600 at 20% per year for 2 years, compounded every year (in ₹).
30. 30.A scooter is worth ₹15200. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
31. 31.A town has 27000 people. The population grows by 10% every year. What will the population be after 3 years?
32. 32.What is the difference between the compound interest and the simple interest on ₹12500 at 8% per year for 2 years (in ₹)?
33. 33.A town has 45100 people. The population grows by 12% every year. What will the population be after 1 year?
34. 34.Find the compound interest on ₹9300 at 8% per year for 1 year, compounded every year (in ₹).
35. 35.Find the compound interest on ₹11200 at 25% per year for 3 years, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
37. 37.What amount will ₹34400 grow to in 1 year at 15% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹31600 at 5% per year for 2 years (in ₹)?
39. 39.What amount will ₹45000 grow to in 2 years at 12% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹18400 at 15% per year for 2 years (in ₹)?

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